docs: def get_absolute_url(self):
          """
          The majority of the time, the URL is the parent's URL plus the slug.
          If not, override this function.
          """
          # Get the appropriate draft or published parent object for the current
          # item, otherwise we risk mixing the draft parent URL with a published
          # item's URL etc.
          if self.is_draft:
              visible_parent = self.parent.get_draft()
          else:
              # Fallback to draft URL for unpublished parent.
              visible_parent = self.parent.get_published() or \
                  self.parent.get_draft()
  
          # Appending "/" to avoid a) django redirect and b) incorrect edit slug
          # for the admin.
          return urljoin(visible_parent.get_absolute_url(), self.slug + "/")